*Age, weight, and/or height does not determine size.*The best way to ensure a proper fit is to take your child's measurements. Girth is the most important measurement & deciding factor!*There is approx 2" increase in girth between each size & approx 1" in all other measurements.

To measure girth, place tape measure on center of right shoulder, run tape measure loosely through crotch and back to right shoulder. If you child is wearing diapers, please be sure to measure with a diaper!